Street-sweeper.



L. S. HACKNEY.

STREET SWEEPER'. APPLICAUON man FEB.21.191'1.

Patented Sept. 7, 1915.

www@

L. lS". HCKNEY.

STREET SWEEPER. APPLICATION '111.511 11213.21. 1911.

1 Patentedept. 7, 1915.4

3 SHEETS-SHEET 3 fw, m

wwf/wwf? "Brion,

LESLIE S. HACKNEY, OF ST. PAUL, MINNESOTA STREET-SWEEPER.

1&52326.

.application led February 21, 19H.

To all vof/0m 'it may concern Be 1t known that l, LnsLinS. HACKNEY, of St. Paul, Ramsey county, Minnesota, have invented certain new and useful Improve-j of which the fol ments in Strcet-Sweepers, lowing is a specification.

The object of my invention is to provide a machine forstreet sweeping purposes which will'gather up the dust and dirt and discharge it into a suitable receptacle.

A. further object is to provide a street sweeper of light draft, and one which will he very efficient for thewpurpose designed.

The invention consistsgenerally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

.in the accompanying drawings forming part of this specification, Figure 1 is a plan view of a street sweeping machine embodying `my invention, Fig. 2 'is a side elevation of the same, the dust receptacle'being broken away to show its inner construction, Fig. 3

1s a transverse sectional view, Fig. 4. is a detail view illustrating the controlling mechanism, Fig. 5` is a sectional view 'on the line af--m of Fig. 4.

In the drawing, 2 represents the frame of a self-propelled vehicle having forward and rear carrying wheels 3 and l and a source of motive power 5 mounted on the forward end of the frame and a steering apparatus 6s of ordinary construction by means of which the forward axle and wheels can be oscillated to steer the machine.

prefer to construct the frame Vas indicated in F ig. 2, so that the forward wheels will roll back under the frame a sufficient distance to allow a comparatively short turn of the machine.

7 is the driving shaft, extending backwardly from the internal combustion engine, which l prefer to employ as a source of mo tive power for this machine, said shaft being arranged centrally with respect to the frame of the machine and having suitable bearings thereon.

8 and A9 are rock shafts mounted in bearings transversely of the machine, the shaft 8 having vertically arranged varms 9 secured thereon provided with slots l() in their upper ends ,to receive pins 11 on a ring 12 that is loosely mounted on a sleeve 13. This sleeve is splined on the shaft 7 and is provided with a friction wheel lei which contacts with a friction disk 15 mounted on a Spreciication of Letters Patent.

Patented Sept. 7, 19115. serial No. 609,998.

shaft 17 which also has bearings on the frame of the machine. The movement of the friction wheel 14 back and forth, toward or from the center of the disk 15 regulates the speed of the shaft 17, as usual in friction mechanisms of this kind. The shaft 8 is rocked by means of a lever 18 secured on the shaft 8 and movable in a guide frame 19. A driving belt 20 connects the shaft 17 with a transverse shaft 21 and a belt 22 connects .the shaft 2l with a shaft 23 which has driving connections at each end through belts 24 with the rear wheels 4. With the foregoing described mechanism I am able to easily and quickly control the speed of the machine from the drivers lseat 25. Evidently the direction of movement. of the machine is reg? ulated by the position of the friction wheel 14 with respect to the center of the disk. This, however,.is ordinary construction in machines which are controlled by 'a friction drive. The shaft 21 also has a driving connection through a belt 26 with the shaft of a brush 27 of the type usually used for street sweeping purposes, and to hold this brush in its proper position I prefer to provide bars 23 at each end thereof connecting the shaft or spindle 29 of the brush with the shaft 21, the bearings of the bars on the shaft 21 being loose and allowing the free revolution of the shaft. This brush is preferably provided with a hood30 of sheet metal or other suitable material. It is capable of vertical movement by the following mechanism. A rock shaft extending across the machine carries at its ends arms 32 connected by links 31 with-the shaft 29. The rock shaft also has an arm connected by. a rod 33 to the lower end of a second lever 34 located near the lever 18 and within convenient reach of the driver. By the operation of this lever the driver can oscillate the bell crank 32 and lift the brush clear of the ground.

A yoke has its arms pivotally connected with the shaft or spindle of the brush and projects rearwardly therefrom and is supported by comparatively small carrying wheels 36. A suction head 37 composed, preferably, of telescoping sections, as shown in Fig. 3, has its lower section supported by the yoke close to the rear of the revolving brush in position to receive the dirt and dust stirred up or loosened by the action of the brush. The yoke has fiexible connections 38 leading therefrom to the link 31, so that when the brush is raised the yoke and the lower section of the head will be lifted also, the sections of the heed having sulliciently loose connections to allow 'n slightI oscillation of the head and permit the sections to telescope freely when the `brush is raised. The brush and the'su'ction head will generally be lifted in passing over obstructions or when the miichine is not in use. The upper 'portion of the suction head coininunicates with e trunk 39 leading to a suction fan casing 40, the fan of which casing is driven through e belt 41 from e pulley 42 loosely mounted on the driving shaft und made operative by means of a friction clutch f the upper portion of this receptacle the wall of the receptacle,

-levers 18 and 34 and is connecte rock shaft 9 bye strong suction in hltcr being open suitable door device 43 that' is controlled from the rock. shaft 9 through clutch in the 'manner heretofore described with respect to the arms 9. An operating lelf'er' 45 is arranged preferably between the d with the link ed The shaft 9 is rocked to set or release the clutch' and drive the fen by the belt 41 from the shaft 7. The operation the head 37 and the dirt ndret'use material stirred up by the brush will be gathered up and l suction head and up through the trunk 39 into the fan casing. A. discharge spout 47 leads from rthe fan casing to ii. rece tacle i8 that is mounted on the rear of the Kreme or chassis of the machine. rEhe spout enters deflected downwardly -by a partition 49. At the bottom of this partition, between it and is a perforated floor 50 forming, with said partition and the walls of the receptacle, a receiver or filter foithe air currents, the top of the and normally closed by e perforated plate 51. The iilter is'adapted to contain air cleansing material, such as charcoal, coke, or anyl other suitable agent which will remove the fine particles ot dust from the air that would not be precipitated by grzivity t'o the bottom of the receptacle. Thematerial in thefilter muy be moisteiied to assist in purifying the air currents. lai-'ge proportion of ,the material in the rel ceptacle will be separated from' the dust laden air currents und deposited in the bottom for removal subsequently through a 52 at the reni'. The plate 51 is preferably hinged so that it lmaybe raised and the filter cleaned and the filtering ugent removed Wliene ver necessn i'y'f lt is sometimes for cleaning the sidewalks 'or pinces where the machine could not be driven. l therefore prefer to provide nipples; 53 on cach arms i4 mounted on said. shaft, and connected with the hub of seid of this fen will cause s.'

"connected with scid motor, drawn into the andy 1sV composed of telescoping sections arranged desirable in iin apparatus of this kind to use a portable suction device side or the trunk 39, normellyclosed yby i place to place and the dust and dirt collected on either side, 6l

and drawn into the tank or receptacle by the suction of the'rapidly revolving ian.

i This mechine may be ma ein varietur.y sizes and its suction power may be varied according to the size of the brush, the chaiacter ofl the material to be'gathered up an the quantity, it bein evident that the sncf" tion power of the sii-may be varied by sliht changes-in its driving. connections as we l tion head. do not wish, therefore,l to be confined in this application to the particularmeii'ns femployedi'or accomplishing the result sought, :is in various ways the construction may-V be modified without depertingfrom my invention.

l'. claim as my invention y f 1. A street sweeper comprising e frame having carrying wheels, e motor mounted'on said ltrame, a revolving brush operatively bars pivotally connected at theirorward ends with said frame and extending downwardly and rearlwiii'dlyk therefrom and `having bearings at their rear ends for scid brush, e suction fan mounted 'on seid freine, e suction head arranged inthe rear of said brush and having Icarrying ncoting it with the pivots ot said brush, the walls of said head being connected at itsupper end with said fan, said brushy and head being free to rise and fall with the inequalities are moving, the open end of said head being Aadjacent to seid brush for collectingthe" dust und dirt from said brush.

2. A street sweeper comprising a 'frame said frame, a revolving` brush operatively connected with seid motorand',having free dom of vertical movement, 'e suction heed in the rear of said brush and lievinan ogen lower end, carrying wheels for sai hea a. suction fen and casing thereforgnd e trunk connecting said heed with said suction fan, seid head being free to rise and the inequalitiesbf the ground over which the brush muy be moving. J ln witness whereof, I have hereunto set my hand this 13th day of February, 1911.

Lnsnin s. HACKNEY.

Witnesses:

ll. C. S'iimivo, N. L. Biincocir.

wheels and 'links' pivotally cones in the size of the fan and of the suc- 8.0

"1.0 of theground over which they having carrying wheels, a motor mounted on fell with 11b 

